Locking device for double doors



FIG. 1 is a top perspective view of a locking device for double doors, showing our new design in a used condition;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevation view thereof, the rear elevation view being an identical image thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a right-side elevation view thereof, the left-side view being an identical image thereof.

The broken lines shown in the drawings depict environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a locking device for double doors, as shown and described. 